megafeis_a08: Add new fex file file for Megafeis A08 hdmi dongle

Reported-by: lukasz@szpotowicz.eu
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
megafeis_a08: Update dram para

Signed-off-by: Hans de Goede <hdegoede@redhat.com>